Insulated metal-framed window sash



April 25, 1961 F. c. OSTEN, SR

INSULATED METAL-FRAMED WINDOW SASH Filed April 9, 1959 INVENTOR.

BY K5 W 129% United States Patent INSULATED METAL-FRAMED WINDOW SASH Fred Charles Osten, Sr., 14500 Abingdon Ave., Detroit, Mich.

Filed Apr. 9, 1959, Ser. No. 805,311

9 Claims. (Cl. 189-76) This invention relates to metal-framed window sash structures and, in particular, to insulated metal-framed Window sash structures.

One object of this invention is to provide a metalframed double-pane window sash construction in which the sash frame structure has outer and inner hollow sheet metal components which are isolated and heat-insulated from one another by heat-insulating members which also support the double-pane unit and enable it to be quickly and easily assembled in the sash frame.

Another object is to provide a metal-framed doublepane window sash construction, as set forth in the preceding object, wherein the heat-insulating members also receive the edges of the outer and inner hollow sheet metal sash frame components so as to hold these components in alignment with one another without danger of their becoming displaced.

Another object is to provide a metabframed doublepane window sash construction as set forth in the preceding objects, wherein the heat-insulating members are of approximately H-shaped cross-section with substantially flat surfaces adjacent the edges of the window pane unit which they support, so as to facilitate assembly by sliding in the windowpane unit from one side thereof.

Another object is to provide an insulated metal-framed window sash construction as set forth in the preceding objects, which is interchangeable With an uninsulated regular window sash in the same window frame, so as to reduce. inventory of parts and simplify manufactureof such window frames, and also to enable such uninsulated regular window sash to be subsequently replaced by insulated sash by the user or owner of the building structure containing the window.

OLher objects and advantages of the invention will become apparent during the course of the following description of the accompanying drawing which shows a central vertical section through a double-hung insulated metalframed double-pane window sash constructionaccording to one-form of the invention, with central portions of the upper and lower sash and window frame omitted to enable showing the details of the invention upon, an enlarged scale.

Referring to the drawing in detail, there is shown therein a window frame or casing, generally designated 10, Which includes jambs or side rails 12 interconnected by a top 14 and sill 16. Secured byfasteners 13 to the top 14 is a hollowshe'etmetal top 20'held in place between outer or blind stops 22 and inner rails or stops 24, these in turn being engaged on or adjacent their exposed faces by rails or strips 26 andZSrespectively. Similarly, the. sill 16 has an inner rail 30 framed by siderails or strips 3-2 and 34 respectively. The foregoing construction, aside from the hoilow' sheet metal top rail 20, is ordinarily of wood and is conventional.

Secured to the. wooden'sill '16 as by the fasteners 36 is a hollow sheet metal sill 3S. Extending between the ly-facing relatively to one another.

2,981,385 Patented Apr. 25, 1961 the opposite side rails 12 are conventional vertical sheet metal outer and inner sash guides 40 and 41 mounted on opposite vertical sides of the window casing 10. The sash guides 40 and 41 have outer and inner guide ribs 42 and 44 formed therein similar to the outer and inner ribs 46 and 48 in the metal top 20 and the upstanding rib 50 on the metal sill 38. On one side of the window casing 10 the sash guides 40 and 4]. are resiliently mounted in a conventional manner (not shown). Slidably mounted in the sash guides 40 and 41 for vertical sliding motion relatively to the outer and inner guide ribs 42 and 44 are outer or upper and inner or lower insulated hollow metal double-pane sash units 52 and 54 respectively equipped with conventional sash balances (not shown) forming no part of the present invention. These are separated from one another by a horizontal hollow insulated metal rail 56. The upper and lower sashunits 52 and 54 are of generally similar construction but are inverted relatively to one another, hence similar parts thereof are designated with the same reference numerals. The separator or parting rail 56, on the other hand, consists of upper and lower approximately question-markshaped members 58 and 60 respectively with adjacent ribs 62 and 64 respectively, separated from one another by an insulating strip 66 of heat-insulating material, such as vinyl plastic, preferably a so-called soft vinyl plastic. The rib 62 of the upper member 58 is embedded in the insulating strip 66, whereas the rib 64 embraces one side thereof. The members 58 and 60 are ofnearly similar cross-sectional shape but are inverted and hence opposite- In this manner, the space between the upper and lower sashes 52 and 54 is filled and leakage of air as well as heat conduction inward or outward substantially minimized.

Each of the sash units or sashes 52 and 54 which, as

with a gap therebetween.

- spectively interconnected by a central web 98. The;

metal'head or top 28 and metal sill 3S and secured to section.

68 have main or outer walls 74, parallelconnecting walls.

tains similar components, hence a description of the lower sash 54 will suffice also for the upper sash 52 without duplicating the description. Eachsash 52 or54 is provided with open-centered outer and innerihollow metal sash frame components 68 and 70 respectively of approximately rectangular C-shaped cross-section of diiferent' widths facing toward and separated from one another by insulating members '72 of approximately H-shaped cross- In particular, the outer and wider. components 76 and 78 of difierent widths perpendicular to the outer wall 74, and laterally-offset butparallel interruptedinner walls 80 and 82 respectively directed toward one another. I l but with their nearer edges spaced apart from one another Similarly, the inner and Tnarj rower components 70 have main or outer walls 84, connecting walls 86 and 88 of dilferent widths perpendicular to the inner wall 84 and laterallyofiset but parallel inter-: rupted inner Walls 90 and 92 respectively directed toward; one another but with the inner edges spacedapart from one another with a gap therebetween.

The insulating members .72 of approximately ?!shaped? cross-section are preferably of so-called rigid vinyl plastic or other suitableheat-insulating material with parallel bar portions. or inner and outer flanges. 94 and 96 reedges of the walls 80 and. 90 ofthe outer andinner com;

ponents 68 and 70 are embedded in the insulating member inner 'fiange 90, whereas the walls 82 and 92 of thel outer .and inner components .68 and 70 are enibedded in .Z the outer flange 96, thus being held firmly in spaced I The insulating members 72 which are adjacent the top and sill 20 and parallel relationship with one another.

38 respectively have outer and inner extensions 100 and 102 of angle cross-section which interfit between their respective components 68 and 70 and the rib 53 of the sill 38 or rib 46 of the top 20 respectively. The extensions 100 and 102 ,.may be integral with the insulating member 72 or separate therefrom. The remaining horizontal insulating members, generally designated 104, are similar to the insulating members 72 except that they lack the extensions 180' and 162 respectively. j

Instead of these extensions, a channelhaped spacer and insulating retaining member 106 of heat-insulating material, such as hard vinyl plastic, is secured as 'by the between the outer and inner components 68 and 70; Sim- :ilarly, the narrower components 70 carry hollow pane unit-retaining strips 110 of approximately channel-shaped cross-section secured to the narrower components 70 by fasteners '112 and-serving'to retain in assembly within the spacebetween the components 68and- 70 a double transparent pane unit 114. The latter is of conventional construction and may comprise any such double-pane unit, several of which are'available commercially uponi'the open market.

Each-double-pane unit 114 is shown'diagrammatically with dry airor an inert gas, such as nitrogen, or it may be partially evacuated, as desired. From the drawing, it

-wil1 be seen that. the narrow sash frame components 70 providea sufliciently large central opening between their I facing, wall portions 86 through. which the double-pane unit 114may be inserted'and secured by-theretaining strips 110, as described below. t f V In the assembly of either of the upperand lower sashes 52 or 54, a pre-assembly is preferably first made'of the wider sash frame components 68 and the insulating members 72 with the inneredges 80 and 82 of the former embedded in.thespaced parallelportions 94 and 9 6 of the latter, as shown in thedrawing. The'insulating memextrusions of rigid vinyl plastic or other suitable insulating material, and their flanges 94 and 96may be suitably grooved longitudinally either during extrusion or subsequently to receivethe. variousl'inner edges 80, and 82 7 of the outer'component 68 or theinner edges 90 and 92 .oftheinnercomponents'm." 1

' After this pre as'sembly-h'as been made as described immediatelyrabove, thefdoublevpane unit 114 is .then' slid into the space 'between the" innerport'ions 94 ;of the insulating'fm'embers 72, and 104untilrth'e edge sealing portions 122 come to rest against the inner walls 80 of outer and inner dead air insulating'chambers 124 and 126 respectively containing voluminous dead air spaces which perform improved and enhanced heat-insulating fasteners108 to the insulating members 104 in the space functions in a more efficient manner than prior insulating arrangements for metal-framed'sash windows.

What I claim is:

1. An insulated metal-framed window sash comprising a pair of open-centered outer'and inner hollow metal sash frame components of approximately C-shaped cross-section," said sash frame components having interrupted 'internal walls facing one another'in spaced parallel relationship with gaps in the internal 'Walls having spaced edges,

said sash frame componentshaving external walls interconnecting their respective internal walls, an open-centered insulatingstructu're of heat-insulating material dis' posed in the space betweenv said outer and inner'sash frame components, said insulating structure being of approximately H-shaped cross-section with spaced substantially parallel outer and inner flanges and aweb interconnecting said flanges, said insulating .structure being disposed in the gaps in said internal wallsin engagement with said internal wall edges, .said insulating structure being spaced apart from said external walls and co-- operating therewith to provide voluminous dead airinsulating chambers, and a window paneflstructure dis posed in the space betweenisaid components.

2. An insulated metal-framed window sash, according to claim 1, wherein one of said sash frame components isfsufliciently narrower than the other sash frame com ponent to provide a central opening which is sufficiently largerthan said window pane structure to freely pass said 1 window pane structure and enable insertion thereof during assembly. 7 a

3. An insulated metal-framedwindow sash, according to claim 1, wherein the'surfaces of said flanges of said insulating structure adjacentthe open center thereof are 7 substantially ,flat and wherein theedges 'of said'pane struc V ture engage said flat surfaces.

4., An insulated metal-framed window sash, according toclaim 1, wherein a spacingv element of heat-insulating material isdisposed between said outer and inner sash.

frame components outwardly of said pane structure.

5; An insulated metal-framed :window sash, according l 'bers 72 and 104 are preferably made i theform'of' claim 4 wherein s d spacing e t hollow,

cross-section. 1

to claim 5,wherein said spacing element'is secured to" said insulating structure.

{the outer sash frame components 68. The assembler then I Qsnaps the: inner components. 70 into place against thesealing portions 1'22 inserts the spacers 106 by means j'of the-fasteners108; and then inserts the retaining chan- 'n'elimembers :110,against the, double-pane Iunits'114and secures. them vto the inner 'sash frame -components7 0 by} -ineans of the'fasteners 112.1 The sashes or sash units 52, Tandf'54" may.then be'handled and installed in the same. I inaimeras uninsulated'double-hun'g sliding sash units, or {installedinireplacementof such units-where the sash 1 guides {wand '41 are of corresponding constructionor: cros's section, The insulatingmembers '72. and. 1040f ,7 H- 'shap edicross-section cooperate ,with the hollowouter f and inner. sash; frame comp'onents681M270 of approxi ately rectangular cross-section; tojprovide"large :7. 'An insulated metal-framed window sash,' a ccording" .toclaim 2, wherein a pane structure retaining element is J Secured to said narrower'sash frame component in the a central opening thereof adjacentsaid pane structureandf V projecting therefrom inwardly past said. pane structure in retaining relationship'ther'ewithf 8. An insulated metal-framed window sash, according to claim 1, wherein an insulating structureiflange extena V sion portion-of heat-insulating materialis disposed out- 1 wardly of saidinsulating structure adjacent the outer peripherythereof;' -1- '9. 'An insulated metal-framed window sash;-;according I to claim 8, Wherein.the insulating'.-str1icture flange extenf, 4 sion portionhas a channel therein;adaptedftointerfit with 3 V a corresponding ribi'within a conventional'window frame; i

References ,Citediniile 6i; 7 1 

